Boat-propelling device.



PATENTED APR. 23, 1907.

C. B. WATERMAN. BOAT PROPELLING DEVICE.

APPLIOATION FILED DEC. 6. 1906.

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/NVENTOE, -CAMEHON- s WATER/WAN- g WITNESSES im 1 g ATT'Y UNITED STATESPATENT OFFICE.

CAMERON B. WATERMAN, OF DETROIT, MICHIGAN, ASSIGNOR TO THE WATERMANMARINE MOTOR COMPANY, OF DETROIT, MICHIGAN, A

CORPORATION OF MICHIGAN.

BOAT-PROPELLING DEVICE.

Specification of Letters Patent.

)Patented April 23, 1907.

Application filed December 6, 1905. Serial No. 290,624.

To all m/mm it may concern:

Be it known that I, CAMERON B. WATER- MAN, a citizen of the UnitedStates of America, residing at Detroit, in the county of Wayne and Stateof Michigan, have invented certain new and useful Improvements inBoat-Propelling Devices, of which the following is a specification,reference being had therein to the accompanying drawings.

My invention relates to new and useful improvements in boat propellingdevices and particularly in the construction and combi raising the motorto lift the propeller and shaft from the water and means for securingthe parts in their raised position, so that they will not drag when itis desired to propel the boat by other means, as by sail or oars.

A third object of my invention is to obviate the overheating liable tobe caused in an air-cooled motor when the speed of propulsion will notproduce an air current sullicient to lower the temperature of the motorto the 7 required point.

In the drawings, Figure 1 shows a side elevation of my motor applied tothe stern of a boat; Figs. 2 and 3 are rear and front elevationsrespectively; Figs. 4 and 5 are vertical longitudinal sections of theupper end lower supporting bearings shown in large scale.

A is a boat having a transom A,

and a stern thwart a.-

B is a supporting post preferably of tubing and is secured to the boatby means ofupper and lower clamps. The upper clamp comprises a verticalmember having downwardlyextending furcations C for engaging the transomand secured thereto by a clamping screw 0 having a screw threadedengagement with one of said furcations C, and a normally horizontalmember having one end bifurcated .to engage the rojection C be tween thefurcations C an the other end 0 a keel A? sleeved on the post B. Thefurcations C are adjustably secured to C by means of a bolt 0 passingthrough C C". A series of apertures being provided in C the upper end ofthe post may be set at difierent distances from the transom to vary thepitch of the propeller shaft, as desired. The lower clamp consists of acup-shaped ste bearing or socket D in which is stopped the. ower end ofthe post B and is bifurcated at (Z and pro vided with a wing screw 61passing through one of the furcations whereby it is secured to the keelor stern 0st of the boat.

E is a motor aving a cylinder E and a crank case E preferably formed intwo sections 6 e in the ordinary manner, the sections being heldtogether by bolts 6' passing through both sections.- The motor issupported on the post B by means of brackets or arms F extending fromcollars F sleeved on the post and fixed thereto by pins or by brazing.It is obvious that each arm may be separately attached to the post ifdesired but I prefer to form them in pairs integral with the collars F.The ends of the arms are bent and slotted to engage the bolts e so thatthe position of the motorrelative to the arms may be adjusted.

The motor shaft G projects from both sides of the crank case and onthe'end between the post and the motor is keyed or otherwise suitablysecured a sprocket H. On the opposite end of the shaft G are ratchetteeth G for enga ement with the teeth J of a starting crank (l which ispreferablyloosely sleeved on the reduced end 9 of the shaft G.

At a suitable distance below the motorare propeller shaft bearings Kpreferably formed in the apexes of V-shaped supports K, the ends of thesupports being secured to the motor by engagement with the ends of thetwo lower bolts a The ends of the supports are slotted at is so that thebolts may be moved therein to adjust the propeller shaft in relation tothe motor. Mounted in these bearings is a ropeller shaft L-havin one endrounded to fit loosely in a recess Ii in the lower end ofpost B justabove the socket I) of the lower clamp, the recess thus forming a thrustbearing for the shaft, and on the other end of the shaft is secured apiopeller wheel L A sprocket H is keyed on the propeller g or shield M tothe upper pair on the tiller, rod R bell crank lever R piv- 4o I parts.

shaft in alignment with the sprocket and an endless chain H carried bythese sprockets transmits power from the motor-shaft to the propeller..It is obvious that a vertical shaft with bevel gears may be used inplace of the chain and sprockets if desired, without departing from thescope of my invention.

I prefer to employ an air-cooled motor on account of-its weight but thetransom of the boat is liable to shutoff most of what little air currentis caused by the motion of the boat and when run at a high speed thereis great danger of overheating. This difficulty I have obviated bysetting the cooling flanges M with a slight downward pitch from thefront to the back of the motor, as clearly shown in Fig. 1, and bysecurin v I arms F, so that the water thrown upwards by the chain IIwhen runnin above normal speed will be deflected and t rown upon theflanges M. The pitch of these flanges will carry a portion of the wateraround to the back of the motor.

and the consequent rapid evaporation will supplement the air cooling. Ifdesired, I may form grooves the flanges to further assist indistributing the water.

On the upper end of the post B I secure a tiller N sleeved on the postand pinned as at n. A gasoline tank 0 is secured on the tiller by meansof metal straps O or by any other suitable means and between this tankand the motor is the carburetor P connected to the motor intake by a gasconduit P and to the tank by a gasoline. conduit P. On the tiller is asector Q to which is pivoted a hand lever Q connected to the commutatorS by means of rod- R, bell crank lever R pivoted oted on the motor, androd R The commutator may thus be adjusted by means of the lever Q and ifdesired I may arrange a lever adjacent thereto with connections foradjusting the throttle or the mixture.

The batteries T and coil T are placed in any suitable place in the boat,preferably under thjesternthwart a, and are electricallyconnectedtconnections not shown) to the commutator S and spark plug S inany ordinarymanner, as the wiring may-be connected in different wayswell known to those skilled in the art and depends largely upon thestyle of coil and commutator employed, I shall not further describe it.

When it is desired to raise the propeller and shaft from the water, thepost B is raised from the step bearing D and slides through the sleevedportion 0 of the upper clamp, carrying the motor, propeller, tiller, andall When raised the required distance, a wing screw passing through ascrew-threaded aperture in 0 is tightened to engage the post B and theparts are thus held in their raised position. The tiller is then presseddownwards, tilting the motor and a deflector other parts, as shown indotted lines in Fig.

1, so that the sprocket H and propeller are entirely clear of the water.The device 1s held in this position by a hook-ended rod U engaging asuitable ring or staple U in the thwart a and the tiller or a suitablering U attached to the tiller.

While I have shown and described specific forms of clamps, I do not Wishto limit mgself to these, as any form of clamp may. 0 used withoutdeparting from the scope of my invention. I prefer, however, to useaform of clamp which may be attached to any boat without the use of toolsand which will permit of the raising alone or the tilting alone or theraising and tilting combined to elevate the propeller above the water.

When the larger sizes of motors are employed, as for instance, for useon sail boats, I may, if desired, provide clamps which Wlll engage thepost B slidably but not rotatably, allowing the boat to be steered byher own rudder. This of course can only be done where the Inotor isattached to the over-hang of the stern aft of the rudder.

With the motor'as shown, the pivotal arrangement of the motor andpropeller mits steering the boat thereby and the w ole device may bestarted and operated from the stern thwart and if it is desired toinstall the 5 on the outside of a boat, of an explosive motor, means forsecuring the crank case of said motor to said frame, a shaft. on saidmotor, a

propeller shaft supported below and parallel i with said motor shaft,and a drive connection therebetween.

'2. In a boat propelling device, the combination with a motor, of amotor-supporting frame therefor arranged to be attached to' the outsideof a boat, a propeller shaft, a support having bearings therefor carriedby and depending from said motor, and a drive connection from the motorto said shaft.

3. In a boat propelling device, the combination with a frame adapted tobe secured on the outside of a boat, amotor mounted thereon, a propellershaft driven and 'suported by said motor, and a thrust bearing or saidshaft on said frame.

4, In a boat propelling device, the combination with clamps adapted tobe attached I to a boat, of a frame pivoted in said clamps, a motorsupported on said frame,,ashaft in said motor, and a propeller shaftsupported by said motor and having a drive connection with said motorshaft.

5. In a boat propelling device, the combination of an internalcombustion engine,

meansv for securing it. outside of a boat, a shaft support dependingfrom the engine, a propeller shaft journaled therein parallel with theengine shaft, and a drive connection between said shafts.

6. In a boat propelling device, the combination of a frame adapted to besecured on the outside of a boat, a motor thereon, a shaft supportdepending from the motor, a propeller shaft therein, a thrust bearingfor the shaft in the frame, and a drive gear from the motor to saidshaft.

7. The combination with an air cooled internal combustion motor adaptedto be secured on the outside of a boat, a propeller shaft driven by themotor shaft, and means associated with said propeller shaft for rais ingwater and directing it upon the cylinder to supplement the air cooling.

-8. The combination with a boat, of an externally supported air cooledinternal combustion engine therefor a propeller shaft below the same, adrive connection from the engine to the shaft, adapted to raise water inthe operation of the engine, and means for directing saidwater upon theengine cylinder.

9. The combination with a boat, of an externally supported air cooledinternal combustion engine, a propeller driven thereby, and meansoperable when the propeller is in motion-for delivering water upon theengine cylinder to supplement the air cooling.

10. The combination with a normally air cooled internal combustionmarine motor and a shaft therefor, of 'a propeller shaft journalledbelow said motor, sprockets on said shafts, a chain engaging saidsprockets to drive said propeller shaft and to raise water and adeflector for directing said water upon said motor, for the purposedescribed.

11. The combination with a small boat, such as a row boat, of asubstantially vertical post swivelled to the stern thereof, a motormounted on'the est, a shaft bearing supported by and be ow the motor, apropeller shaft journalled-therein and having a drive connection withsaid motor, and a thrust bearing for the shaft in the post.

12. The combination with a swivelled post, of brackets projectingoutward therefrom, a motor supported on the brackets, a depending shaftsupport carried by the motor, a propeller shaft therein operativelyconnected to the motor, and a thrust bearing for theshaft in the post.

13. The combinationwith a swivelled post,

brackets projecting outward therefrom, a motor supported on thebrackets, a depend- ,ing shaft support carried by the motor, a

propeller shaft therein, a thrust bearing for the-shaft in the post anda drive connection on the shaft between said thrust bearing and saidshaft support.

14. The combination with a boat, a post hinged to the stern thereof foradjustment about horizontal and vertical axes, a step bearing for thelower end of the post and a motor, propeller shaft, and drive connectionsupported on the post.

15. In a boat propelling device, the combination with a frame, anexplosive motor supported thereon, and a propeller wheel having a driveconnection with said motor, of means adapted to be clamped to a boat,and means connecting said clamping means to said frame and permittingsaid frame to be raised vertically and tilted in a vertical plane inrelation to said clamping means.

16. In a boat propelling device, the combination with a frame, anexplosive motor supported thereon, and a propeller wheel having a driveconnection with said motor, of means adapted to be clamped to theoutside of the boat, and a link having a horizontal pivotal connectionwith said means and sleeved on'said frame for the purpose described.

17. In a boat propelling device, the combination with a frame, anexplosive motor supported thereon, and a propeller wheel having a driveconnection with said motor,

ofmeans adapted to be clamped to a boat, a link slidably attached tosaid frame, and a horizontal pivot adjustably connecting said link tosaid clamping means, for the purpose described;

18. In a boat repelling device, the com bination with a ffame arrangedfor horizontal and vertical pivotal attachment to a boat of an explosivemotor mounted on said frame, a propeller mounted below said motor andhaving a drive connection therewith, a tiller attached to said frame,and motor-controlling means carricd by said tiller.

19. In a-boat-propelling device, the combination with a boat, of a frameadapted to be removably pivoted thereon, a motor, proeller, and driveconnections carried bysaid frame, a tiller rigidly secured to saidframe, and motor-controlling means and fuel-supply receptacle carried bysaid tiller.

20. In a boat propelling device, the combination with a clamping memberarranged to detachably engage the stern of a boat, of a post, bracketsprojecting laterally from said post, a motor supported by said bracketsa propeller shaft projecting laterally from said postbelow said motor, adriving connection between said motor and shaft, and adjustableconnecting means between said post and said clamping member forregulating the pitch of said propeller shaft.

21. In a boat propelling device, the combination with a post and a motorcarried thereby, of a member sleeved on said post adjustment, and a clamarranged to be attached to the stern of a. oat and adjustably post toadjust said drive connection.

and longitudinally adjustable in relation thereto, means for limitingsaid longitudinal connected to said member for varying the angle of saidpost to the stern of the boat, for the purpose described.

22. In a boat propelling device, the com bination with a post arrangedto be secured to the outside of a boat, of a motor and propeller carriedthereby, a drive connection between said motor and propeller and meansfor adjusting said motor in relation to said 23. The combination with alower sup- Iporting stepped bracket and an upper bracket 1 aving atubular bearing, said brackets being adapted to be detachably clamped tothe stern of a boat, of a vertical motor-supporting frame engaging saidstepped bracket and having a sliding pivotal engagement with the bearingin said upper bracket, and means for rigidly securing said tubularbearing to said frame, for the purpose described.

24. In a boat propelling device, the combination with an internalcombustion engine and means for pivotally supporting said engine on theoutside of a boat, of a horizontal shaft in said engine, a shaft supportdepending from and swinging with the engine, a propeller shaft journaledin said support, and-a drive connection from the engine shaft to thepropeller shaft.

In testimony whereof I aiIiX my signature in presence of two witnesses.

CAMERON B. WATERMAN.

